I just love baking holiday cookies during this time of year. This is the recipe I like to use when I make my chocolate chip and M&M cookies. You will add both the chocolate chips and the M&M's to your cookie dough batter.
Easy Chocolate Chip and M&M Cookies
1 cup vegetable shortening
1 cup butter, softened
2 cups brown sugar
1 teaspoon vanilla extract
4 cups all-purpose flour
2 teaspoons baking soda
1 teaspoon salt
1 cup sour cream or buttermilk
1 1/4 cups milk chocolate chips
1 1/4 cups of M&M chocolate coated candies
Mix all ingredients together in the order that they are given in the recipe. Drop by the teaspoonful onto a cookie sheet. Bake at 350 degrees for 10-12 minutes or until done. Let cool.